Rainbow Electronics MAX8649 - Manual (Page 3)

MAX8649
1.8A Step-Down Regulator with Differential
Remote Sense in 2mm x 2mm WLP
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PARAMETER CONDITIONS MIN TYP MAX UNITS
VID0, VID1, EN Logic Input
Pulldown Resistor
Controlled by I 2 C command:
VID0_PD = 1
VID1_PD = 1
EN_PD = 1
200 320 450 k Ω
I 2 C INTERFACE
SDA Output Low Voltage I SDA = 3mA 0.03 0.4 V
I 2 C Clock Frequency 400 kHz
Bus-Free Time Between START
and STOP
t BUF 1.3 µs
Hold Time Repeated START
Condition
t HD_STA 0.6 0.1 µs
SCL Low Period t LOW 1.3 0.2 µs
SCL High Period t HIGH 0.6 0.2 µs
Setup Time Repeated START
Condition
t SU_STA 0.6 0.1 µs
SDA Hold Time t HD_DAT 0 -0.01 µs
SDA Setup Time t SU_DAT 0.1 0.05 µs
Setup Time for STOP Condition t SU_STO 0.6 0.1 µs
STEP-DOWN DC-DC REGULATOR
OPERATION_MODE_ = 0, V OUT = 1.27V, no switching 54 70 µA IN1 + IN2
Supply Current
OPERATION_MODE_ = 1, V
OUT
= 1.27V, f
sw
= 3.25MHz 9 mA
Minimum Output Capacitance
Required for Stability V
OUT
= 0.75V to 1.38V,
I
OUT
= 0 to 1.8A
10 µF
OUT Voltage Range 10mV steps 0.750 1.380 V
Output Overvoltage Protection Rising, 50mV hysteresis (typ) 1.65 1.8 1.9 V
ELECTRICAL CHARACTERISTICS (continued)
(V IN1 = V IN2 = 3.6V, V AGND = V PGND = 0V, V DD = 1.8V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A =
+25°C.) (Note 2)